/Engine/Source/Runtime/Core/Public/Misc/Attribute.h
Creates an attribute by binding an arbitrary function that will be called to generate this attribute's value on demand. After binding, the attribute will no longer have a value that can be accessed directly, and instead the bound function will always be called to generate the value.
template<typename... VarTypes> static [TAttribute](API\Runtime\Core\Misc\TAttribute) CreateStatic ( TIdentity_T< typename FGetter::template TFuncPtr< VarTypes... > > InFuncPtr, VarTypes... Vars )